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/*
* ALOG Levels: F - Fatal, E - Error, W - Warning, I - Info, D - Debug, V - Verbose
*
* Using them to work within the Android logcat logging mechanism:
*
* % logcat '*:v' [To display Verbose Logging]
* % logcat 'fcntl_portable:v' [To display just this fcntl logging]
*
* NOTE: This assumes you only use the 'PORTABLE_TAG'; which is the default.
* For debugging LTP it's been helpful to include the LTP program being tested;
* which is enabled below with #define EXTENDED_LOGGING.
*
* Logging routines also support ALOG*_IF() and ASSERT(); For details See:
*
* ${ANDROID_TOP}/system/core/include/cutils/log.h
* and
* http://developer.android.com/tools/debugging/debugging-log.html
*
* ALOGV is turned off by release builds: Use the #define below with LOG_NDEBUG=0 to enable.
*
* Strace works fine with ALOG out if a large max string size is used via the -s option;
* Example:
*
* strace -s 132 ./sigaction01
*
* writev(3, [{"\2", 1},
* {"./sigaction01`signal_portable\0", 30},
* {"sigaction_portable(portable_signum:10:'SIGUSR1_PORTABLE:10', ...
* {"map_portable_sigset_to_mips(portable_sigset:0x7fe47a0c, ...
* ...
*/
/*
* Enable LOG_NDEBUG to have debug code visible in logcat output by default.
* Also possible via the Lib-Portable Android.mk file. Example:
*
* # Have logging permanently enable during development.
* LOCAL_CFLAGS += -DLOG_NDEBUG=0
*/
// # define LOG_NDEBUG 0
// #define EXTENDED_LOGGING /* Include the current program name in the LOG_TAG */
#ifdef EXTENDED_LOGGING
/*
* Inline function to put the current program name
* and this library into the logcat prefix. Example:
*
* V/./sigaction01`signal_portable(605): sigaction_portable(... ) {
* -----------------------------
*
* Disabled by default in AOSP, enable by removing the // above.
* Useful when debugging more than one program; For example LTP has thousands.
*/
#define MAX_TAG_LEN 128
static char my_portable_tag[MAX_TAG_LEN + 1];
static inline char *portable_tag() {
extern char *__progname;
if (my_portable_tag[0] == '\000') {
strncat(&my_portable_tag[0], __progname, MAX_TAG_LEN);
strncat(&my_portable_tag[0], ".", MAX_TAG_LEN - strlen(my_portable_tag));
strncat(&my_portable_tag[0], PORTABLE_TAG, MAX_TAG_LEN - strlen(my_portable_tag));
}
return my_portable_tag;
}
#define LOG_TAG portable_tag()
#else /* !EXTENDED_LOGGING */
#define LOG_TAG PORTABLE_TAG
#endif
/*
* Override LOG_PRI() defined in ${AOSP}/system/core/include/cutils/log.h
* to preserve the value of errno while logging.
*/
#define LOG_PRI(priority, tag, ...) ({ \
int _errno = *REAL(__errno)(); \
int _rv = android_printLog(priority, tag, __VA_ARGS__); \
*REAL(__errno)() = _errno; \
_rv; /* Returned to caller */ \
})
#if !defined(__HOST__)
#include <cutils/log.h>
# define PERROR(str) { \
ALOGE("%s: PERROR('%s'): errno:%d:'%s'", __func__, str, *REAL(__errno)(), strerror(errno)); \
}
# define ASSERT(cond) ALOG_ASSERT(cond, "assertion failed:(%s), file: %s, line: %d:%s", \
#cond, __FILE__, __LINE__, __func__);
#else
#include <assert.h>
# define PERROR(str) fprintf(stderr, "%s: PERROR('%s'): errno:%d:'%s'", __func__, str, *REAL(__errno)(), strerror(*REAL(__errno)()))
# define ASSERT(cond) assert(cond)
# define ALOGV(a,...)
# define ALOGW(a,...)
# define ALOGE(a,...)
#endif
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